I was introduced to sex via literotica which taught me early that size only goes so far and for many women it's not a huge priority. My girlfriend is very petite and tight and she has told me that while she can feel a difference in size, she and her girlfriends whom she discusses sex with prefer men with more girth than length. At the same time, my ex and I had a healthy relationship about penis size before we broke up and she told me that she enjoyed getting fucked by longer men but I was still great in bed because of foreplay as well as my knowledge of positions.

There is plenty of proactive improvements you can do to overcome any real or imagined shortcomings in bed but don't let either let you feel insecure about some girl who was tactless to say such a thing in the first place.